Examples of DTMIterator

com.sun.org.apache.xml.internal.dtm.DTMIterator
3.org/TR/xpath#NT-LocationPath>LocationPath or a UnionExpr.

A DTMIterator is meant to be created once as a master static object, and then cloned many times for runtime use. Or the master object itself may be used for simpler use cases.

At this time, we do not expect DTMIterator to emulate NodeIterator's "maintain relative position" semantics under document mutation. It's likely to respond more like the TreeWalker's "current node" semantics. However, since the base DTM is immutable, this issue currently makes no practical difference.

State: In progress!!
org.apache.xml.dtm.DTMIterator
3.org/TR/xpath#NT-LocationPath>LocationPath or a UnionExpr.

A DTMIterator is meant to be created once as a master static object, and then cloned many times for runtime use. Or the master object itself may be used for simpler use cases.

At this time, we do not expect DTMIterator to emulate NodeIterator's "maintain relative position" semantics under document mutation. It's likely to respond more like the TreeWalker's "current node" semantics. However, since the base DTM is immutable, this issue currently makes no practical difference.

State: In progress!!

Examples of com.sun.org.apache.xml.internal.dtm.DTMIterator

   * @throws javax.xml.transform.TransformerException
   */
  public int asNode(XPathContext xctxt)
          throws javax.xml.transform.TransformerException
  {
    DTMIterator iter = execute(xctxt).iter();
    return iter.nextNode();
  }

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Examples of com.sun.org.apache.xml.internal.dtm.DTMIterator

 
      // System.out.println("FuncPosition- prox: "+prox);
      return prox;
    }


    DTMIterator cnl = xctxt.getContextNodeList();


    if (null != cnl)
    {
      int n = cnl.getCurrentNode();
      if(n == DTM.NULL)
      {
        if(cnl.getCurrentPos() == 0)
          return 0;
          
        // Then I think we're in a sort.  See sort21.xsl. So the iterator has 
        // already been spent, and is not on the node we're processing. 
        // It's highly possible that this is an issue for other context-list 
        // functions.  Shouldn't be a problem for last(), and it shouldn't be 
        // a problem for current().
        try 
        { 
          cnl = cnl.cloneWithReset(); 
        }
        catch(CloneNotSupportedException cnse)
        {
          throw new com.sun.org.apache.xml.internal.utils.WrappedRuntimeException(cnse);
        }
        int currentNode = xctxt.getContextNode();
        // System.out.println("currentNode: "+currentNode);
        while(DTM.NULL != (n = cnl.nextNode()))
        {
          if(n == currentNode)
            break;
        }
      }
      // System.out.println("n: "+n);
      // System.out.println("FuncPosition- cnl.getCurrentPos(): "+cnl.getCurrentPos());
      return cnl.getCurrentPos();
    }


    // System.out.println("FuncPosition - out of guesses: -1");
    return -1;
  }

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Examples of com.sun.org.apache.xml.internal.dtm.DTMIterator

  {


    int firstStepPos = compiler.getFirstChildPos(opPos);
    int analysis = analyze(compiler, firstStepPos, 0);
    boolean isOneStep = isOneStep(analysis);
    DTMIterator iter;


    // Is the iteration a one-step attribute pattern (i.e. select="@foo")?
    if (isOneStep && walksSelfOnly(analysis) && 
        isWild(analysis) && !hasPredicate(analysis))
    {

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Examples of com.sun.org.apache.xml.internal.dtm.DTMIterator


    // System.out.println("iter: "+iter);
    if (null != iter)
      return iter.getLastPos(xctxt);


    DTMIterator cnl = xctxt.getContextNodeList();
    int count;
    if(null != cnl)
    {
      count = cnl.getLength();
      // System.out.println("count: "+count); 
    }
    else
      count = 0;   
    return count;

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Examples of com.sun.org.apache.xml.internal.dtm.DTMIterator

  public Expression locationPath(int opPos) throws TransformerException
  {
    locPathDepth++;
    try
    {
      DTMIterator iter = WalkerFactory.newDTMIterator(this, opPos, (locPathDepth == 0));
      return (Expression)iter; // cast OK, I guess.
    }
    finally
    {
      locPathDepth--;

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Examples of com.sun.org.apache.xml.internal.dtm.DTMIterator

//    while (DTM.NULL != nl.nextNode())
//    {
//      i++;
//    }
//    nl.detach();
  DTMIterator nl = m_arg0.asIterator(xctxt, xctxt.getCurrentNode());
  int i = nl.getLength();  
  nl.detach();


    return new XNumber((double) i);
  }

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Examples of com.sun.org.apache.xml.internal.dtm.DTMIterator

   * @return the first node out of the nodeset, or DTM.NULL.
   */
  public int asNode(XPathContext xctxt)
    throws javax.xml.transform.TransformerException
  {
    DTMIterator iter = (DTMIterator)m_clones.getInstance();
    
    int current = xctxt.getCurrentNode();
    
    iter.setRoot(current, xctxt);


    int next = iter.nextNode();
    // m_clones.freeInstance(iter);
    iter.detach();
    return next;
  }

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Examples of com.sun.org.apache.xml.internal.dtm.DTMIterator

   */
  public XObject execute(XPathContext xctxt, int context)
          throws javax.xml.transform.TransformerException
  {


    DTMIterator nl = m_functionExpr.asIterator(xctxt, context);
    XNumber score = SCORE_NONE;


    if (null != nl)
    {
      int n;


      while (DTM.NULL != (n = nl.nextNode()))
      {
        score = (n == context) ? SCORE_OTHER : SCORE_NONE;


        if (score == SCORE_OTHER)
        {
          context = n;


          break;
        }
      }


      // nl.detach();
    }
    nl.detach();


    return score;
  }

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Examples of com.sun.org.apache.xml.internal.dtm.DTMIterator

  public XObject execute(XPathContext xctxt, int context, 
                         DTM dtm, int expType)
          throws javax.xml.transform.TransformerException
  {


    DTMIterator nl = m_functionExpr.asIterator(xctxt, context);
    XNumber score = SCORE_NONE;


    if (null != nl)
    {
      int n;


      while (DTM.NULL != (n = nl.nextNode()))
      {
        score = (n == context) ? SCORE_OTHER : SCORE_NONE;


        if (score == SCORE_OTHER)
        {
          context = n;


          break;
        }
      }


      nl.detach();
    }


    return score;
  }

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Examples of com.sun.org.apache.xml.internal.dtm.DTMIterator

  public XObject execute(XPathContext xctxt)
          throws javax.xml.transform.TransformerException
  {


    int context = xctxt.getCurrentNode();
    DTMIterator nl = m_functionExpr.asIterator(xctxt, context);
    XNumber score = SCORE_NONE;


    if (null != nl)
    {
      int n;


      while (DTM.NULL != (n = nl.nextNode()))
      {
        score = (n == context) ? SCORE_OTHER : SCORE_NONE;


        if (score == SCORE_OTHER)
        {
          context = n;


          break;
        }
      }


      nl.detach();
    }


    return score;
  }

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